test/hotspot/jtreg/runtime/invokedynamic/TestDynamicConstant.java

/*
 * Copyright (c) 2020, Huawei Technologies Co. Ltd. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * questions.
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 */

/**
 * @test
 * @bug 8239915
 * @compile DynamicConstantHelper.jasm
 * @run main TestDynamicConstant
 */

import java.lang.invoke.*;

public class TestDynamicConstant {
    static final MethodHandles.Lookup LOOKUP = MethodHandles.lookup();
    static final MethodType TEST_MT = MethodType.methodType(void.class);
    static final Class<?> TEST_CLASS;

    static {
       try {
          TEST_CLASS = Class.forName("DynamicConstantHelper");
       } catch (ClassNotFoundException e) {
           throw new Error(e);
       }
    }

    static void test(String testName, Class<? extends Throwable> expectedError) {
        try {
            LOOKUP.findStatic(TEST_CLASS, testName, TEST_MT).invokeExact();
        } catch (Throwable e) {
            if (expectedError.isInstance(e)) {
                // expected
            } else {
                e.printStackTrace();
                String msg = String.format("%s: wrong exception: %s, but %s expected",
                                           testName, e.getClass().getName(), expectedError.getName());
                throw new AssertionError(msg);
            }
        }
    }

    public static void main(String[] args) throws Throwable {
        test("testDoubleConstantDynamic", NoSuchMethodError.class);
        test("testIntConstantDynamic",  NoSuchMethodError.class);
    }
}